Antique Pittsburgh 3.5 fitter Lamp scenic Slag glass metal base only 17.5

Up for consideration is an antique mid sized lamp base for a reverse painted or slag glass shade. It stands about 17.5 inches in height. The fitter size appears to be 3.5 inches. If you have any questions please message me. Please see photos as part of the description. Warm e s t R eg a rd s. J oh n n yC ry stal Est.